The number 71434
71434 is a composite number with 16 divisors. Its prime factorisation is 2 × 11 × 17 × 191. Divisors (16): 1, 2, 11, 17, 22, 34, 187, 191, 374, 382, 2101, 3247, 4202, 6494, 35717, 71434.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 71434: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
71434 is composite. Its prime factorisation is
- 3
The divisors add up to 124416; without 71434 itself that is 52982, so 71434 is deficient (52982 is less than 71434). Euler's totient φ(71434) = 30400 numbers up to 71434 share no factor with it.
- 4
The digits of 71434 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 99 steps to reach 1.
LaTeX source of the formulas on this page
\[ 71434 = 2 \times 11 \times 17 \times 191 \]
71434 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 124416 |
| Euler totient φ(n) | 30400 |
| Square | 5102816356 |
| Cube | 364514583574504 |
| Square root | 267.271398 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 99 |
| Scientific notation | 7.1434 × |
71434 in other forms
| Form | Value |
|---|---|
| In words | seventy-one thousand four hundred and thirty-four |
| Binary (base 2) | 10001011100001010 |
| Octal (base 8) | 213412 |
| Hexadecimal (base 16) | 1170A |
| Base 3 | 10121222201 |
| As time | 71434 seconds = 19 h 50 min 34 s |
Is 71434 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (71434 ÷ 2 = 35717) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (71434 ÷ 11 = 6494) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 71434 a prime number?
No. 71434 = 2 × 11 × 17 × 191, so it is divisible by 2.
What are the factors of 71434?
1, 2, 11, 17, 22, 34, 187, 191, 374, 382, 2101, 3247, 4202, 6494, 35717, 71434.
What is 71434 in binary?
10001011100001010 (hexadecimal 1170A, octal 213412).
What is the square root of 71434?
About 267.2714.
Is 71434 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 71434?
71434 is a happy number: repeatedly adding the squares of its digits reaches 1.